Brush pan



Nov 24, 1925,

C. l... CORNE I BRUSH PAN Nov. 24, 1925.

C. L. CORNE BRUSH PAN Filed June 17, 1925 2 sheets-Sheet 2 Wm. km,

adonne/35,

Patented Nov. 24, 1925.

PATENT OFFICE.

CHARLES Louis CORNE, or :enoussann Louisiana.

:BRUSH PAN.

Application filed. June 17, 192.5. Serial No. 37,783.

To all whom t may cof/wem.'

Be it known that I, CHARLES LOUIS GoRNn, a citizen of the United States, residing at Broussard, in the parish of Lafayette and State of Louisiana, have invented certain newv and useful Improvements in Brush Pans; and I do hereby declare the following to be a full, clear, and exact description j of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in brush pans and refers more particularly to a combined brush and evaporating pan useful for removing impurities from cane and other juices.

It is an object of the invention to provide an improved pan which will subject the juices to progressive degrees of temperature therein and in which the construction of the pan, combined with this progressive heating will separate out the impurities and permit of the skimming off of the impurities at the cold end of the pan, without loss of the pure juice, while permitting of subjecting such juice to violent ebullition at a remote end of the pan.

The invention has for a further object to provide a. pan in which independentheating units are provided in which to subject the juice to progressive heating, with controls for the heat units assembled for convenient operation at the working side of the pan; and to provide in the pan a cover f or the separation of the frothy material; whlle also to provide in conjunction with the pan and cooperation with said4 cover, an open tank for the regulation of the height of the liquor in said pan. j

`With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughoutthe Several views,

Figure 1 is a topplan view with a portion broken of an improved brush pan constructed according to the present invention. Figure 2 is a longitudinal section taken therethrough.

Figure 3 is a cross section taken through the pan and showingfthe control apparatus,

and

Figure 4 is an enlarged fragmentary sec tion showing a detail.

Referring more particularly to the drawings 5 designates the bottom of the pan having the side walls 6 and the endv walls 7 and 8; said side and end walls having the upper outwardly flaring flanges 9. The pan is relatively shallow but is quite long as compared with its width. I have found that a pan measurin sixty feet (60) in length and si): feet 6) in width will give excellent results. In the pan are placed heating coils 10, 11 and 12, preferably three in number and with the coils thereof preferably eX- tending in the same plane slightly spaced above and parallel with the bottom 5 of the pan to permit of a space beneath the coils for the circulation of the juices from the cold to the hot end of the pan as indicated by the arrows in Figure 2. The coil 10 is placed close to the hot end of the pan adjacent the end wall 7 while the last coil 12` in o-rder being remote from the cold end of the pan at which is placed the overflow weir 13 transversely of the pan and spaced from the end wall 8 whereby to form with said wall a trough 14 into which the scum and impurities which rise to the surface of the liquid may be discharged. At the bottom of the trough is a discharge pipe 15. The tank is provided with the wash out plug 16 at a convenient place in its bottom wall preferably adjacent, though not obscured by the coil 12. The coils are supplied with steam or other suitable heating medium from the general supply pipe or trunk 17 which connects through the coupling 18 with the branch pipes 19, 2O and 21 leading to the several coils 10, 11 and 12. Valves 22, 23

'and 24 are disposed in the branch pipes for independently controlling the heating medium to such coils. The branch pipes preferably enter the brush pan at one side, while the discharge pipes 25,26 and 27 lead off from the opposite side of the pan tothe common tail pipe 28 by which the heating medium and water of condensation may be conveyed away or returned to the source. Check valves 29, 30 and 31 are provided in the take 01T pipes 25, 26 and 27 for preventing back flow from the tail pipe into the coils. y

The juice is let in to the pan at the cold end throu h the charge pipe 32 having the control valve 33, In the pan is disposed the cover plate 34 arranged at the hot end ot the pan and supported upon the angle bars shown more particularly in Figures 3 and 4j. T he angle bars are secured as by the screws 3G to the side walls G olf the tank, while the cover rests upon the horizontal flanges of the angle bars and is removably secured thereto as by the screws Si or other 'tastenings. The cover plate 3 extends above and substantially parallel with the first two heating coils 10 and 11 and is spaced slightly above these heating coils to provide a channel 'for the passage ot' the heated juices which ascend beneath this cover plate and tend vto return to the cold end as indicated by the arrows in Figure rlhe cover plate 3l also contines the greater heat given oit by the coils 10 and 11 and creates a condition ot violent ebullition in the highly heated juice beneath such. pl-ate. rllhe clear juices are carried off by the pipe at the hot end ot the pan to a tank 39 having a central partition l() therein dividing such tank into the compartments #l1 and 12. The pipe 3S communicates with the bottom ot the conn partment all and the juice is intended to tlow over the upper edge of the partition and into the compartnient 412 whence the liquor is taken oli by the discharge pipe 43 to the effects or other apparatus. 'The height ot the partition Ll0 will regulate the height ot juice in the brush pan. The top of the tank 39 is lett open.

Referring to Figure 3 it will be seen that the stems il et the 'several valves 22, 2? and 24C for controlling the inlet ot steam ytothe heating coils gare drawn `o-rwa-rd across Vthe top oi the brush and are provided with the hand wheels mounted in a suitable support` 416 where they will vbe convenient to the hand of the operator upon the licor t? at the working side ot the pan.

In the use ot the device through the con trol oi Vthe valves 22, and 2l, a progressive heating ot the juice in the brush pan will be brought about. The heating medium will be introduced into the first coil 10 in such volume and at such temperature as to create a condition otboiling in 'the `juices at this hot end ol' the pan, while a vlesser amount of heating medium will be let into the second coil 11, so as to-maintain a highly heated condition inthe juice throughout the length of this second coil but at a lower degree than that maintained at the first coil and a stilll lesser degree of' heat will be given off by the third coil through the control of its valve 24. The juice is thus subjectedto a scale of temperatures. -l/Vhile the pan may be ot any dimensions,desired, where the pan 'is sixty feet (GW) Vlong as above referred to, the cover plate 34: is twelve feet (12') in length and coversthe coils 10 andy l1. This cover plate 34 subserves several functions F or instance it willdirect the iiow of the foam to the mud end or the cold end ot the pan. It also causes the juice to break up in a sort of cascade where it discharges from under the plate. T he plate moreover contines a great portion of the liquor and uice at the boiling end and conserves the heat and forms a condition ol violent ebullition which is necessary to scparate out the impurities. lilith the use ot this plate the eticiency of the pan is increased substantially titty percent. The juice is charged in through the pipe 32 and thil action oit the pan is continuous. The cold juice will liow along the bottom ol the pan beneath the heating coils to the hot end oi' the pan where it is violently heatedj r`ses and passes back along the under side et the plate fiel. yissuing violently and turbulenlly trom beneath the end ot this plate whereby to cause tlre'impurities to troth and to run toward the cold end ot the pan where they may be skimmed oft into the trough 14; and conveyed to the wash out 15. .The juice will then be returned to the covered end ot' the pan along the bottom thereof and this circulation of the juice may be continued as long as is necessary to remove all ot' the impurities, The pure juice passes ont at the hot end of the pan through the pipe 38 as heretofore re'lerred to. rlhe clear juice goes to the effect tanks when the brush pan is used for cleaning juice for making sugar or to evaporators when making syrup. ln other words the machine ma)v be used tor making syrup or for cleaning juice tor inaking sugar.

It will be noted that the pipe 38 passes through the bottom of the pan. and has its openend .disposed at an elevation above said bottom. The cold juice comes in at the cold end ofthe pan approximately sixty feetfrointhe hot end, but while there is more steam turned in the coil 10 at hot end, both coils 1l and 12 are also at boiling temperature. In other words over twothirds of the pan ismaintained at boiling temperature. When the cold juice reaches the coil 12 it will rapidly attain the boiling point and it will be kept at this high temperature until circulating to the hot end of the pan and returning again to the cold end of the pan. Of course all ot the juice at the coil portion of the pan will be kept in a boiling, seething condition. Consequently no cold juice can find its way to the outlet pipe 38 and such juice as passes immediately out of this pipe 38 after a single traverse of the pan wilLbe subjected in its course in an adequate heat treatment to :remove the impurities. @t course on account ofthe boiling action the juice will not circulate as indicated by the arrows in an unbroken current, but the arrows simply show. the general, trend of the juices. The brush pan takes .out the impurities in solution, it being understood that prior to entry of the pan the juice has been as thoroughly cleaned as prior existing methods permit. The settlers take out the solid matters and the brush pan takes'out the irnpurities that cannot be seen. The brush pan is us-ed for making syrup or for sugar making.

It is found in the practical use of the pan that soluble impurities that could not be removed with a filter are separated out from the juices and that surprisingly great quantities of impurities are removed in the improved brush pan leaving a syrup or juice that is unequaled for its cleanliness and uniformity of color.

.It is obvious, that various changes and modifications may be made in the details of construction and design of the above spe-` cifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed is g# 1. A brush pan comprising a pan body of elongated and substantially narrow construction with a cold and a hot end, ay discharge for the impurities at the cold end and a discharge for the pure juice at the hot end of the pan, means for charging the tank at the cold end thereof, and a series of heating units in the hot end of the pan having separate controls whereby the juice is subjected to progressively decreasing ranges of temperature from the hot toward the cold end of the pan, with a cover plate located abcve the heating units adjacent to the hot enc.

2. A brush pan comprising a pan body having a yhot and cold end with a discharge for the pure juice at the hot end and a discharge for the impurities at the cold end, a series of heating units at the hot end of the pan, controls whereby said heating units may be caused to subject the juice to progressively decreasing ranges of temperature from the hot toward the cold end of the pan, and a cover plate over a portion of the hot end of the pan.

3. A brush pan comprising a pan body of elongated construction having remot-e hot and cold ends with a discharge for the pure ljuices from the base of the hot end and a discharge for the impurities from thel upper portion of the cold end of the pan, means for charging the tank with the juice to be cleaned, a series of heating units inthe hot end of the pan, and a cover plate in the hot end of the pan -extending over certain of said heating units.

4. A brush pan comprising a shallow,v

5. A brush pan comprising an elongatedy substantially shallow and narrow pan body having remote hot and cold ends with a discharge at its hot end for the pure juices `and a discharge at its cold end for the impurities, a charge pipe for introducing the liquor into the tank, a number of heating coils extending from said hot end of the pan toward the cold end thereof, independently controlled means for supplying heating medium to said coils, said coils extending substantially parallel and in spaced relation above the bottom of the pan, and a cover plate removably mounted in said tank and placed in spaced relation above certainv of said coils whereby' to provide a channel for the passage of julces.

CHARLES Louis'conun. 

